/*
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.vvlive.caibao.smartcity.decoding;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.vvlive.caibao.smartcity.camera.CameraManager;
import com.vvlive.caibao.smartcity.camera.PlanarYUVLuminanceSource;
import com.vvlive.caibao.smartcity.ui.CaptureActivity;

import java.util.Hashtable;

import smartcity.vvlive.caibao.com.smartc.R;

final class DecodeHandler extends Handler {

  private static final String TAG = DecodeHandler.class.getSimpleName();

  private final CaptureActivity activity;
  private final MultiFormatReader multiFormatReader;

  DecodeHandler(CaptureActivity activity, Hashtable<DecodeHintType, Object> hints) {
    multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(hints);
    this.activity = activity;
  }

  @Override
  public void handleMessage(Message message) {
    switch (message.what) {
      case R.id.decode:
        //Log.d(TAG, "Got decode message");
        decode((byte[]) message.obj, message.arg1, message.arg2);
        break;
      case R.id.quit:
        Looper.myLooper().quit();
        break;
    }
  }

  /**
   * Decode the data within the viewfinder rectangle, and time how long it took. For efficiency,
   * reuse the same reader objects from one decode to the next.
   *
   * @param data   The YUV preview frame.
   * @param width  The width of the preview frame.
   * @param height The height of the preview frame.
   */
  private void decode(byte[] data, int width, int height) {
//    long start = System.currentTimeMillis();
//    Result rawResult = null;
//    PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(data, width, height);
//    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
//    try {
//      rawResult = multiFormatReader.decodeWithState(bitmap);
//    } catch (ReaderException re) {
//      // continue
//    } finally {
//      multiFormatReader.reset();
//    }
//
//    if (rawResult != null) {
//      long end = System.currentTimeMillis();
//      Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
//      Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, rawResult);
//      Bundle bundle = new Bundle();
//      bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
//      message.setData(bundle);
//      //Log.d(TAG, "Sending decode succeeded message...");
//      message.sendToTarget();
//    } else {
//      Message message = Message.obtain(activity.getHandler(), R.id.decode_failed);
//      message.sendToTarget();
//    }
      long start = System.currentTimeMillis();
      Result rawResult = null;

      //modify here
      byte[] rotatedData = new byte[data.length];
      for (int y = 0; y < height; y++) {
          for (int x = 0; x < width; x++)
              rotatedData[x * height + height - y - 1] = data[x + y * width];
      }
      int tmp = width; // Here we are swapping, that's the difference to #11
      width = height;
      height = tmp;

      PlanarYUVLuminanceSource source = CameraManager.get().buildLuminanceSource(rotatedData, width, height);
      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
      try {
          rawResult = multiFormatReader.decodeWithState(bitmap);
      } catch (ReaderException re) {
          // continue
      } finally {
          multiFormatReader.reset();
      }

      if (rawResult != null) {
          long end = System.currentTimeMillis();
          Log.d(TAG, "Found barcode (" + (end - start) + " ms):\n" + rawResult.toString());
          Message message = Message.obtain(activity.getHandler(), R.id.decode_succeeded, rawResult);
          Bundle bundle = new Bundle();
          bundle.putParcelable(DecodeThread.BARCODE_BITMAP, source.renderCroppedGreyscaleBitmap());
          message.setData(bundle);
          //Log.d(TAG, "Sending decode succeeded message...");
          message.sendToTarget();
      } else {
          Message message = Message.obtain(activity.getHandler(), R.id.decode_failed);
          message.sendToTarget();
      }
  }

}
